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Computer quit turning on, power supply tests good


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#1 mattbirk

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Posted 19 July 2010 - 06:33 PM

I have a problem, had a friend's computer quit turning on. I assumed it would be the power supply, but tested it and it tested fine. Then when I plug it back into the motherboard it won't work if I push it all the way in, but it will work if I don't push it all the way down...just kind of hold it in place not locked in the slot...if that makes sense, kind of hard to explain. And when I say it works, I mean the fans light up and spin and everything gets power. But otherwise...nothing. Just dead.

What could cause this?

It almost seems like it's shorting out...there are some screws missing on the motherboard, but I don't know if there are screw holes in the case or not...just looking for possibilities right now.

thanks!

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#2 MrBruce1959

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Posted 19 July 2010 - 07:13 PM

It could be shorting out, but most likely cause is an open circuit or faulty solder connection between the motherboard ATX power supply socket or a problem with the PSU's power wire plug that connects to it.

You may have to remove the motherboard so you can inspect the connection of the lugs on the soldered side of the motherboard, to see if one is loose and moving. If this is the case, you will need to purchase a soldering iron and solder and re-tin the connection.

What I described above is just a basic description, precautions have to be taken and if you intend to attempt this repair, please ask for further instructions before proceeding.

Doing this proceedure incorrectly can cause more damage to the connecter or motherboard.

Bruce.

Edited by MrBruce1959, 19 July 2010 - 07:30 PM.

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#3 mattbirk

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Posted 27 July 2010 - 01:12 PM

What would you suggest I do? It's not my computer, and I'm not going to mess with the soldering...I don't trust myself with any of that.

But the problem would most likely be open circuit on the motherboard? Like I said, power supply tests good...no issues there.

I have never had an issue like this, a little strange...

Thanks for the help/input!

#4 DevonSchreiner

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Posted 27 July 2010 - 01:47 PM

I would contact the motherboard manufacturer, run through their troubleshooting and see if that helps because it sounds like something is wrong with the connection to me too. If you don't trust yourself hopefully it is still under some kind of warranty and you can get it serviced through them.
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